How the H*LL does this work
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2nd Gear
Joined: Apr 2012
Posts: 6
Likes: 0
From: New York
How the H*LL does this work
Just became a first time owner of a Harley, and it happens to be a 77 Sx250 (250cc AMF 2stroke).
It is a basket case project bike, however around 90% complete between a rolling chassis and the Basket of parts.
The one thing I cannot wrap my head around tight enough to figure out is the fact it runs 2 spark plugs in a single cylinder from a single ignition coil.
I though I might have been crazy and it was missing a coil,but according to the wires in the loom (still factory taped and wrapped) this is not the case.
FOR SANITY'S SAKE CAN SOMEONE BREAK IT DOWN FOR ME??
Do I need some special park plug wire? Maybe I am missing some kind of coil to coil jump lines AND the other coil?
It is a basket case project bike, however around 90% complete between a rolling chassis and the Basket of parts.
The one thing I cannot wrap my head around tight enough to figure out is the fact it runs 2 spark plugs in a single cylinder from a single ignition coil.
I though I might have been crazy and it was missing a coil,but according to the wires in the loom (still factory taped and wrapped) this is not the case.
FOR SANITY'S SAKE CAN SOMEONE BREAK IT DOWN FOR ME??
Do I need some special park plug wire? Maybe I am missing some kind of coil to coil jump lines AND the other coil?
Tourer
Joined: Dec 2010
Posts: 250
Likes: 0
From: Mesa arizona
Just became a first time owner of a Harley, and it happens to be a 77 Sx250 (250cc AMF 2stroke).
It is a basket case project bike, however around 90% complete between a rolling chassis and the Basket of parts.
The one thing I cannot wrap my head around tight enough to figure out is the fact it runs 2 spark plugs in a single cylinder from a single ignition coil.
I though I might have been crazy and it was missing a coil,but according to the wires in the loom (still factory taped and wrapped) this is not the case.
FOR SANITY'S SAKE CAN SOMEONE BREAK IT DOWN FOR ME??
Do I need some special park plug wire? Maybe I am missing some kind of coil to coil jump lines AND the other coil?
It is a basket case project bike, however around 90% complete between a rolling chassis and the Basket of parts.
The one thing I cannot wrap my head around tight enough to figure out is the fact it runs 2 spark plugs in a single cylinder from a single ignition coil.
I though I might have been crazy and it was missing a coil,but according to the wires in the loom (still factory taped and wrapped) this is not the case.
FOR SANITY'S SAKE CAN SOMEONE BREAK IT DOWN FOR ME??
Do I need some special park plug wire? Maybe I am missing some kind of coil to coil jump lines AND the other coil?
Seasoned HDF Member
Joined: May 2008
Posts: 21,132
Likes: 12,693
From: South Carolina
One of the holes may have been for a compression release, I remember when they would fail we would yank them out and just put a spark plug in the hole just to plug the opening......
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